For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningMaintenance Schedule
Owner Checks and Services
At Each Fuel Stop
• Check the engine oil level.
Once a Month
• Check the tire inflation pressures.
• Inspect the tires for wear.
• Check the windshield washer fluid level.
Engine Oil Change
When the CHANGE ENGINE OIL SOON DIC message or Code 82 DIC message dis ...
Checking and Adding Power Steering Fluid
Caution: When adding fluid or making a complete fluid change, always
use the proper power steering fluid. Failure to use the proper fluid
will cause hose and seal damage and fluid leaks.
Clean the area surrounding the reservoir cap.
Remove the reservoir cap.
Inspect the power steeri ...
Air/Wind Noise
Special Tools
CH-39570 Chassis Ear
GE-41416 Ultrasonic Leak Detector
Warning: Refer to Assistant Driving Warning in the Preface section.
To analyze a reported windnoise condition, test drive the vehicle to
determine the origin of the noise.
Choose a regular route with smooth and strai ...